Perhaps you should try some spelling variations:
hieu sach » chieu sach, hieu cach, dien sach
tranh cua » doanh cua
hang cong » dang cong, hang nong, bang cong
cong doan » cong dan, cong hoan, dong doanh
doc hieu » toc thieu, hoc thieu, hoc hien
manh cua » doanh cua, ban cua
phan cau » phan dau, phan tu, phan lap
phan cac » nhan cach, phan dau, phan lap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu sach - canh ((tranh cua) OR (manh cua)) hang cong doan ((phan cau) or (phan cac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu sach - canh ((tranh cua) OR (manh cua)) hang cong doan ((phan cau) OR (phan cac)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu sach - canh ((tranh cua) OR (manh cua)) hang cong doan ((phan cau) or (phan cac))".
• Adding a wildcard symbol may retrieve word variants: doc hieu sach - canh ((tranh cua) OR (manh cua)) hang cong doan ((phan cau) or (phan cac))*.